The Zombies mod is finally updated for game versions 2.0 and above.
New features:
Multiple materials (skins/clothing) for businessman, firefighter, policewoman, and male and female soldier zombies.
Charged versions of the burnt, businessman, businesswoman, cowgirl, generic female, office worker, firefighter, generic male, and medical scrubs zombies.
Infernal versions of the burnt, businessman, businesswoman, female lumberjack, office worker, firefighter, policewoman, and military zombies.
New custom Unity shaders:
support fading (most people notice it on the Plague Spitter but it's also used elsewhere)
support the new "MatColor" property used for Radiated, Charged, and Infernal
new hair shader uses dithering for transparency - no more "glow in the dark" hair
Updated Unity controller
Other misc. 2.0 updates (localizations, spawn probabilities, etc.)